How To Fix WER420 - *****420 - 439: Operation messages2******************************

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 420

• Message text: *****420 - 439: Operation messages2******************************

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WER420 - *****420 - 439: Operation messages2****************************** ?

  The SAP error message **WER420 ***420 - 439: Operation messages2 is not a standard, widely documented SAP error message in the usual SAP message repositories or OSS notes. However, based on the structure and typical SAP error message conventions, I can provide guidance on how to analyze and resolve such messages.
  
  Understanding the Error Message
  
  Message Class: WER420 (likely a custom or industry-specific message class)
  Message Number: 439
  Message Text: "Operation messages2" (seems truncated or generic)
  
  The message seems to be related to operations in a process, possibly in Production Planning (PP), Plant Maintenance (PM), or another module where operations are managed.
  
  Possible Causes
  
  
  Custom or Industry-Specific Message:
  
  The message class WER420 is not a standard SAP message class. It might be custom-developed or part of an industry solution (e.g., IS-Oil, IS-Retail, etc.).
  The message number 439 and text "Operation messages2" suggest it might be a placeholder or a message triggered during operation processing.
  
  
  
  Operation Data Issue:
  
  The error might occur during the processing of operations in a work order, routing, or maintenance order.
  Possible causes include missing or inconsistent operation data, invalid operation status, or incorrect operation parameters.
  
  
  
  Program or User Exit Issue:
  
  The message might be raised from a user exit, BAdI, or custom enhancement that validates operations.
  It could be a debug or test message left in the code.
  
  
  
  Data Inconsistency or Missing Configuration:
  
  Missing configuration in routing, work center, or operation control keys.
  Incomplete or inconsistent master data related to operations.
  
  
  
  
  How to Investigate
  
  
  Check Message Class and Text:
  
  Use transaction SE91 to look up message class WER420 and message number 439.
  Review the full message text and any variables or parameters passed.
  
  
  
  Check Where the Message is Raised:
  
  Use transaction SE38 or SE80 to search for WER420 or message number 439 in the ABAP code.
  Look for MESSAGE e439(wer420) or similar statements.
  Identify the program, function module, or user exit raising the message.
  
  
  
  Analyze the Context:
  
  Identify the transaction or process step where the error occurs.
  Check the operation data involved (e.g., routing operation, maintenance order operation).
  Review the data for completeness and correctness.
  
  
  
  Check OSS Notes and SAP Help:
  
  Search SAP Support Portal for message class WER420 or related keywords.
  If it is a custom message, check with your development team or industry solution documentation.
  
  
  
  
  Possible Solutions
  
  
  Correct Operation Data:
  
  Ensure all required fields in the operation are filled correctly.
  Validate work center, control keys, and other master data.
  
  
  
  Fix Custom Code:
  
  If the message is from custom code, review the logic and correct any issues.
  Remove or clarify placeholder messages.
  
  
  
  Apply SAP Notes:
  
  If related to an industry solution, check for relevant SAP Notes or patches.
  
  
  
  Consult Functional Team:
  
  Work with PP, PM, or relevant functional consultants to verify configuration.
  
  
  
  
  Related Information
  
  Transaction SE91: To view and edit message classes.
  Transaction SE38 / SE80: To search for message usage in ABAP programs.
  SAP Modules: PP (Production Planning), PM (Plant Maintenance), or IS (Industry Solutions).
  User Exits / BAdIs: Custom enhancements that might raise messages.
  SAP Support Portal: For notes and knowledge base articles.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Message
  WER420 439: Operation messages2
  
  
  Cause
  Likely custom or industry-specific message related to operation data issues or custom code.
  
  
  Solution
  Investigate message class in SE91, find source in ABAP, correct operation data or custom code.
  
  
  Related Info
  Check operation master data, configuration, user exits, and SAP Notes.
  
  
  
  
  If you can provide more context (transaction code, module, or screenshot), I can help you further pinpoint the cause and solution.